利用简单模板制备多孔二氧化硅
Preparation of Porous Silica with Simple Organic Template
查看参考文献21篇
文摘
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以简单有机模板为致孔剂、正硅酸乙酯(TEOS)为硅源制备了多孔SiO2,考察了模板剂加入量对样品比表面和孔容的影响,测定了样品的比表面和孔结构,提出了简单有机模板对多孔SiO2的致孔机理,并与以碱性硅溶胶为硅源对比,验证了该机理.结果表明,简单有机模板添加量为模板剂/TOES=0.3 mg/mL时,样品比表面积可提高至650 m2/g以上,孔容大于1.0 mL/g,孔道为无规则结构.该多孔结构的产生很可能是因为简单有机模板和TEOS的聚合物发生分子级混合,从而在凝胶和煅烧过程中使样品中产生了丰富的孔道. |
其他语种文摘
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Porous silica was prepared with simple organic template and tetraethyl-orthosilicate (TEOS) as pore-generating agent and silicon precursor respectively. The influences of dosage of simple organic template upon the specific surface area and pore volume of the as-made porous silica were investigated. BET, SEM and TEM methods were employed to analyze the specific surface area and pore structure of the silica samples. A proposed mechanism was developed to explain the pore-forming effect of the simple organic template on the porous silica. Parallel experiments with base-silica-sol used as silicon precursor were also conducted to testify the proposed mechanism. The results indicated that when the dosage of the template was 0.3 g/mL TEOS, the samples with large surface area (>650 m~2/g) and high pore volume (>1.0 mL/g) could be successfully prepared, and the pore structure was amorphous. It is highly possible that the amorphous pores are generated by the simple organic template which was mixed with TEOS polymer in molecular scale and was burnt away in the following calcination process. |
来源
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过程工程学报
,2009,9(5):1005-1010 【核心库】
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关键词
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多孔二氧化硅
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溶胶-凝胶
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模板
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地址
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中国科学院过程工程研究所, 多相复杂系统国家重点实验室, 北京, 100190
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1009-606X |
学科
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化学工业 |
基金
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国家863计划
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文献收藏号
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CSCD:3744531
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参考文献 共
21
共2页
|
1.
Kresge C T. Ordered Mesoporous Molecular Sieves Synthesized by a Liquid-crystal Template Mechanism.
NATURE,1992,359:710-712
|
被引
1266
次
|
|
|
|
2.
Beck J S. A New Family of Mesoporous Molecular Sieves Prepared with Liquid Crystal Templates.
Journal of the American Chemical Society,1992,114:10834-10843
|
被引
886
次
|
|
|
|
3.
Huo Q. Mesostructure Design with Gemini Surfactants:Supercage Formation in a Three-dimensional Hexagonal Array.
SCIENCE,1995,268:1324-1327
|
被引
39
次
|
|
|
|
4.
Huo Q. Surfactant Control of Phases in the Synthesis of Mesoporous Silica-based Materials.
CHEMISTRY OF MATERIALS,1996,8:1147-1160
|
被引
64
次
|
|
|
|
5.
Tanev P T. A Neutral Templating Route to Mesoporous Molecular Sieves.
SCIENCE,1995,267:865-867
|
被引
181
次
|
|
|
|
6.
Tanev P T. Mesoporous Silica Molecular Sieves Prepared by Ionic and Neutral Surfactant Templating:A Comparison of Physical Properties.
CHEMISTRY OF MATERIALS,1996,8:2068-2079
|
被引
24
次
|
|
|
|
7.
Tanev P T. Biomimetic Templating of Porous Lamellar Silicas by Vesicular Surfactant Assemblies.
SCIENCE,1996,271:1267-1269
|
被引
26
次
|
|
|
|
8.
Zhao D. Tri-,Tetra-and Octablock Copolymer and Nonionic Surfactant Syntheses of Highly Ordered,Hydrothermally Stable,Mesoprous Silica Structures.
Journal of the American Chemical Society,1998,120:6024-6036
|
被引
150
次
|
|
|
|
9.
Zhao D. Triblock Copolymer Syntheses of Mesoporous Silica with Periodic 50 to 300 Angstrom Pores.
SCIENCE,1998,279:548-552
|
被引
361
次
|
|
|
|
10.
Soleimani Dorcheh A. Silica Aerogel,Synthesis,Properties and Characterization.
Journal of Materials Processing Technology,2008,199:10-26
|
被引
115
次
|
|
|
|
11.
Wu Y H. Free-standing Anion-exchange PEO-SiO2 Hybrid Membranes.
Journal of Membrane Science,2008,307:28-36
|
被引
3
次
|
|
|
|
12.
Chang K Ch. Preparation and Characterization of Superhydrophobic Silica-based Surfaces by Using Polypropylene Glycol and Tetraethoxysilane Precursors.
Surface and Coatings Technology,2007,201:9579-9586
|
被引
5
次
|
|
|
|
13.
Haruko S. Three-dimensional Observation of Macroporous Silica Gels and the Study on Structural Formation Mechanism.
Colloids Surf ,A,2007,300:245-252
|
被引
1
次
|
|
|
|
14.
Gallardo J. Preparation and in vitro Evaluation of Porous Silica Gels.
BIOMATERIALS,2002,23:4277-4284
|
被引
2
次
|
|
|
|
15.
Martin J. Mechanical and Acoustical Properties as a Function of PEG Concentration in Macroporous Silica Gels.
JOURNAL OF NON-CRYSTALLINE SOLIDS,2001,285:222-229
|
被引
5
次
|
|
|
|
16.
王娟. 聚乙二醇对纳米多孔二氧化硅薄膜性能的影响.
无机材料学报,2005,20(2):436-441
|
被引
1
次
|
|
|
|
17.
谷景华. 多孔二氧化硅块材的制备.
稀有金属材料与工程,2008,36(Suppl 1):545-548
|
被引
1
次
|
|
|
|
18.
何飞. 二氧化硅干凝胶的制备与结构分析.
材料工程,2005(12):13-16
|
被引
2
次
|
|
|
|
19.
沈军. 纳米孔超级绝热材料气凝胶的制备与热学特性.
过程工程学报,2002,2(4):341-345
|
被引
22
次
|
|
|
|
20.
孙继红. SiO_2-PEG凝胶体系织构特性的研究.
高等学校化学学报,2000,21(1):95-98
|
被引
12
次
|
|
|
|
|